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Oligohymenophorea (formerly Nassophorea): Peniculida: Parameciidae

Paramecium caudatum
Ehrenberg, 1838

Mitochondria

Paramecium caudatum Genus: Cigar- or foot-shaped; a single macronucleus and 1 to several vesicular or compact micronuclei (Kudo, 1966).
Species: 180-300 μm long; a compact micronucleus; two contractile vacuoles (Kudo, 1966). Cylindrical or cigar-shaped; rounded anteriorly, pointed posteriorly; one large compact micronucleus ("caudatum" group) approximately 8 μm diam.; two contractile vacuoles; 170-290 μm long (Wichterman, 1986). Elongate, rounded anteriorly, pointed posteriorly; caudal cilia present; 180-280 μm long; a single macronucleus with a single micronucleus; two contractile vacuoles (Carey, 1992).

P. caudatum, an intact cell, composite photo (x400), by Y. Tsukii
Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum Paramecium caudatum


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